Fuel Lines, Hose & AN Fittings

Fuel Lines, Braided Hose & AN Fittings — Professional Plumbing Solutions

Professional-quality fuel line plumbing is one of the most visible indicators of a carefully built performance vehicle. The network of fuel lines, braided hose, and AN fittings that connects the fuel tank to the delivery system must withstand fuel pressure, temperature cycling, vibration, and the chemical attack of petrol, ethanol, and other fuel types — for the life of the vehicle. Getting the plumbing right from the start means a leak-free system that's safe, reliable, and visually clean.

Our fuel line and fitting range is the largest in our catalogue at over 1,200 products, dominated by Earl's — one of the most respected names in performance plumbing for over five decades — alongside fittings and hose from NOS, Holley, and Brian Tooley Racing. Whether you're building a complete custom fuel system for an LS swap or replacing worn fuel hose on a classic truck restoration, we have the components to do it correctly.

AN Fittings — The Language of Performance Plumbing

AN fittings — Army-Navy standard, originally developed for aerospace applications — are the universal standard for performance fuel, oil, and cooling system plumbing. The system uses a 37-degree flare sealing surface that provides reliable, repeatable sealing without gaskets or thread sealant, and a standardised size designation (AN-3 through AN-20) that makes fitting selection straightforward once you understand the system. Every AN fitting from any quality manufacturer in the correct size will connect correctly with any other — creating a universal interchangeability that makes building and modifying plumbing systems predictable and reliable.

Our AN fitting range covers the full size spectrum in straight, 45-degree, and 90-degree configurations with both male and female ends, bulk fittings for hard line connections, and banjo configurations for tight-clearance applications. Aluminium fittings in natural, blue, and red anodising are the street performance standard; stainless steel fittings are available for applications requiring additional corrosion resistance.

Braided Stainless Hose — Performance Fuel Line

Braided stainless steel hose with PTFE or synthetic rubber inner liner is the professional choice for fuel, oil, and brake line plumbing in performance applications. The stainless braid provides mechanical protection against chafing and impact damage while adding a purposeful visual quality to exposed plumbing. PTFE-lined hose provides excellent resistance to the full range of fuel types including ethanol blends, and maintains flexibility at low temperatures while resisting the heat-induced softening that affects rubber fuel hose near exhaust components.

Clamp-On Fittings — Cost-Effective Assembly

Clamp-on hose fittings provide a cost-effective alternative to reusable swaged fittings for applications where a permanent connection is acceptable. They install with basic hand tools — no crimping press or special equipment required — and produce a secure, leak-free connection appropriate for medium-pressure fuel system applications. Our range covers the standard AN sizes with both aluminium and steel clamping collars.

Fuel Hose for Classic Applications

Traditional rubber fuel hose — compatible with modern ethanol-blended fuels and appropriate for original-specification plumbing on classic vehicles — is stocked in standard diameters for correct-specification replacement and custom fuel system construction. Classic truck and muscle car restoration projects often require fuel hose in specific diameters to maintain the factory appearance of under-bonnet plumbing.